Buffing machine



Q W. SMILEY EBUFFING MACHINE Filed March 51, 1922 Dec. 27, 1927,

3 Sheets-Sheet l Ekgk llllll I l l l I l l ||ll.....ll|ll..

Dec. 27, 192?, 1,653,940

a. w. BAHLEY BUFFING MACHINE Filed March 31, 1922 3 Sheets-Sheet 3 EX B Umms N Y) mug (i/b04556 Patented Dec. 27, i 1927.

UNITED STATES PATENT OFFICE.

CHARLES W. BAILEY, F LYNN, MASSACHUSETTS, ASSIGNOR T0 JOHN HAMMOND STEVIART, OF LYNNFIELD, MASSACHUSETTS.

Bummer MACHINE.

Application filed March 31, 1922. Serial No. 548,329,

This invention relates to bufling machines and is particularly intended for butting oil the skived faces of counter and we stifi'ener members, or the like. As ski'v'ed these members are thinner at their edges than centrally. This invention provides mechanism for feeding the skived blanks to a buliing wheel or roll which may, if desired, be so (le'forlned that the surface to be buffed is brought into a plane so that it may properly be acted upon by a cylindrical butting roll. Means are also provided. for pressing the Work against the butting roll in the proper position. i q p i For a more complete understanding or this invention reference may be had tothe' Figure is a fragmentary section on line 5-50f Figure 3.

Figure his a transverse section through the blank to bebuh'ed.

This machine comprises abui'ling'roll 1ndicated at 1 Which is fixed to a shaft jourmaled in bearings 3 WlHClI aresupported on the upper -face of the machine bed4. The

roll 1 is rotated by means of a beltpu'lley 5 fixed to shaft 2 between two of the 'l ea-ri11gs 3, and over which passes a belt b which leads about a pulley '4' on a main power shaft 8 journaled in bearings 9 near the'base of the machine. The bufiing' roll 1 is of any suitable construction, as herein shown'lt being composed of two senncyllndrlcal sections ltland 11 surrounding the shaft 2 and havin a coverin 12 of abradant material.

C! b i In order to feed the blanks or other work to be buffed to this roll, a pair of spaced feeding n'lecl'lanisms, between which the roll is supported, are herein indicated. Each these IHGCl'IEtHlSIIlS comprises upper and lower flutedfeed rollers, the lower rollers being indicated at 15 and the upper rollers at 16, The lower rollers 15 are fixed to shafts 17 journaled' in brackets 18 extending upward from the machine bed 1. At onelend these shatl'tsfare extended beyond thebearings 18' into bearings 19 in a bracket 20. ()utvardly: 1 of the bearings 19, the shafts 17 havehxed thereto gear-s21 both of which mesh with anintermediate gearQB carried stub shaft 23, which is journalled in a bearing 230 centrally disposed between the bearings 19. lnwardly oi' the bearing i230, sliafft23 has fixed thereto a sprocket \i'heelQl over,

which passes a chainjQQ lu hich (BlitOlltlS dowln u dly within the machine base and about a sprocket \rheel 24 on a jack shaft 24;. This pick shaft has fixed thereon a pair-of gears 12!. and 26' with which may be n'ieshed gears 27 and 28 sliduble axially of a shaft 29, this mechanism serving as a two speed selective drive between the shaft?) and the jack shaft/2 1. The shaft 29 has fix'ettlthere to'a sprocket wheel 30 over which passesa chain 31 leading to a sprocket Wheel 32 mounted on a stub shaft 33 carried by a bracket This sprocket Wheel is fixed to rotate with-a gear 35 meshing with a pin .1011 36 on the drive shaft 8.

lVhen either ofthe'geai 27 or 28 is in mesh With either gear 2501' 26, rotatiolrot' the] shaft 8 inip'arts rotation to the shaft 17 and to the lower teed rollers.

The'upper' feed rolls 16 are fixedto stub axles so journaled in sleeves ll formingpoi-"- tionsoflever members 4:2 tulcrumed' 0n pins 43 carried by upstanding ears llsuppqrted from the bed at. Each lever member 12 has a central u eb portion 15 "which is perfo', rated at eG'tor'the loose r-eeeptionof a stud 4;? threaded'at its lower endin a portion ofthe ear 4st.

stud 17 and bears at its lower end against end againstthe' under face of Washer {19 held in place by lock nuts threaded 0n the upper end of the stud. By this means the upper and lower feed rollers are urgedto}' Ward each other. ()utwardly of each bear mpg-18, each shaft 17 has fixed thereto pin-1 ions with Whichmesh similar pinions 56 carried by the shafts 10, whereby rotation imparted to the shafts. 17 to rotatethe lower rollers rotates the upper rollers in the reverse 8 direction.

In order that the upper face of the skiveid blank which it is designed shall be bull ed in the presentniachine shall be presented properly to the buffing rolhlvthe feed rollers may be designed to present the skived surface in a plane which may be )erated'upon by a butting roll. For this purpose the lower 7 In order to urge the lew er" 42 downwal'dlya spring 48 surrounds the 7 rollers in alinement so that two blanks may be operated upon simultaneously side by side. Each lower roller therefore, 15 larger at its ends and tapers to asmaller diameter at its center; If desired the two lower rollersin alinernent with each other might be made 111- tegral as a single roller having two portions of small diainecer, a central enlarged portion and enlarged end portions. Inorder to present the cent ally, thickened portion of the blanks into the smaller portionsof the lower rollers theupper rollers 16 are formedcomplemental to the lower rollers, that is, each roller 16 is of larger diameter at its central portion and ofreduced diameter at its ends, this being clearly indicatedin Figure 1, As the blanks are fed beneath the bufling roller, the top faces are held ina plane by engagc ment between the spaced pairs of feed roll-,

ers. The largerportion of each roller 16 engages the thicker central portion oflthe blank so localizingthe pressure to bendit to conform to the contour of the lower roller.

D ueto the elasticity ofthe blanks their thin edges have no tendency to rise from the lower roller to engage the smaller portions of the rollers 16, and astheir lower faces are pressed into contact with the lower rollers their upper faces remain substantially in one plane. p j

In order that the work may beheld up against thebulling roll, while it is being fed, the following mechanism is provided, The machine bed 4, at opposite sides directly beneath the ends of the bailing roll, is formed with a pair of alinedvertical guideways in which are supported apair oflugs 61 extending laterally from opposite sides ofa yoke frame 62. This yoke frame may be adjusted vertically with relation to themachine bed dby means of adjusting screws 63 threaded through the bases of the,

guide members and impinging against the lower faces of the lugs 61. In order to his ten the'yoke frame in adjusted position, a bolt 65 passes through a slot 66 in theinncr wall of one of the guideways andis threaded at its inner end in the yoke 6 By tightening this bolt the yoke frame may be clamped securely in position. The yoke frame (j Q lll-j prlses a pair of end members 70 connected by spaced lower cross frame members 71, upper cross frame members 72, and vertical webs 73. The end members 70, above the frame member 72, have upwardly projecting ears 'i' lfor the reception of pivotbars 75. On each pivot bar ispositioned a series or fingers or levers 76 which are spaced apart along the pivot bars 'by means of washers ling roll in conformity with the thickness of;

77. The inner ends of these liiigers extend toward each other and inclined upwardly heneath the buliing roll 1, lingers pivoted on the opposite rods 7 5 being positioned alternately along the length of the bulling roll. The upper end of each linger preferably carries a removable wear piece T8. The wear pieces of the several fingers To, projecting theretoward from oppositely inclined directions alternately, form together a surface for receiving the material to be halted and pressing it against the periphery of the boiling roll As the thickness of the material varies lengthwise of the rolhjn ovisionis made for individually adjusting thejposition of each of the wear plates 78 so as to coniornito the material and press it against the balling rollin the desired relation. For this pur pose the rear cnd of each lever or linger To is provided with a notch 80, the notches oi" the adjacent lingers being staggered to pen mit room for the positioning of tension members shown at 81 each having a loop or hoolc portion 82 seated in one of thenotches to drawthe outer end of thelinger downwardly to press its upper endtoward the balling roll. The lower end of each spring 81 has lined thereto an adjusting rod ii'lwhich passes through a cross frame member 71 and is threaded into an adj Listing nut 8d at itsouter till llil

end. A look nut is also threaded on each bar 83 between the nut 84: and the cross bar 71. Each nut Se is preferably provided with a screw driver slot 86 at its outerendfby which it may be turned, for the purpose of adjusting the position of the rod and cons'equently the tension of its spring 81;

It is also desirable to limit the possible movement of eachblocIc'IS toward the brill- 1 till the materialso that the balling may prop} erly cliected and pressure applied only where it is des red to remove stock. For this pun pose, beneath each lever or linger n; and be tween the pivot rod 75 and its spring 81., is positioned an adjustable abutment block till. Each block is slotted at its outer cnd to form a channel to receive the edge of a linger Til and is slidablc within an opening ill in a cross fame member These blocks are also staggered to permit the finger-s76 to be positioned closely adjacent each other without interference. Each of these blocks is recessed in its lower end at 91 to receive the reduced extremity of an adjusting rod 1 which is threaded through the menjiber T2 and projects withinthe rearendof the rc rises 91. The outer end of each rod $12 has fixed therein a. cross pin 93 by which it may be turned to adjust it in and out relative to the cross bar 72, and consequently to raise and lower its abutment block 90. A lock nut 94: may be employed to lock cachrod 92 in adjusted position. By this means it is Seenthatthe limit to which each wear block 199 7 8 may approach the buffing roll is adjustably limited by the setting of the corresponding abutment block so that as the material S feeds through in the direction shown by arrow A in Figure 2, its upper surface, which is to be buffed, is bent into a plane as shown in dotted lines in Figure 6 to present it to the butling roll, and that the work is held in this position by the wear pieces 7 8 while it is being buffed. lVith some classes of work it is found tha the fingers are sullicient to present the Work properly to the butting roll without the ne cessity of employing conical feed rollers. Cylindrical feed rollers may then be employed in place of the rollers and 16.

The buffing roll is preferably driven in the direction as shown by the arrow in Figure 2 so that the portion in engagement with the work moves in the direction of feed and at a higher speed. This not only aids in feeding the material to the machine but also brushes the dust and'material abraded away from the operator feeding the machine. If desired a rotary brush may be positioned as shown in Figure 2 at 100. This brush preferably rotates against the line of feed to move the dust and abraded material away from the worlt as it is fed from the machine, and preferably both brush and roll throw the waste material toward the opening of a blower chute (not shown) by which it may )0 removed as in ordinary practice in buffing machines.

If desired chutes or trays for supporting the work as it is fed to and delivered from the machine may be employed as shown at 101 and 102.

Having thus described an embodiment of this invention it should be evident to those skilled in the art that many changes and modifications might be made therein without departing from its spirit or scope as defined by the appended claims.

I claim:

1. In a machine of the class described, a pair of spaced sets of feed rollers, each set comprising cooperating rollers tapered complementally between their ends and centers, :1 hailing roll positioned between said sets, and means for pressing material being fed by said sets of feed rollers against the periphery of said bufiing roll..

2. In a machine of the class described, a

bailing roll, a pair of series of fingers, the fingers of one of said series being disposed angularly to the fingers of the other series and the fingers of the two series being arranged in alternation lengthwise of said roll, and means for resiliently urging one end of each finger toward said roll.

3. In a machine of the class described, a buffing roll, a frame vertically adjustable beneathsaid roll, a pair of relatively angularly disposed series of fingers pivoted to said frame, the upper ends of the fingers of the two series being positioned alternately lengthwise of said roll, and resilient means acting on the opposite ends of said fingers for urging the upper ends thereof toward said roll. l. In a machine of the class described, a butting roll, a frame vertically adjustable beneath said roll, a pair of relatively angularly disposed series of fingers pivoted to said frame, the upper ends of the fingers of each series being positioned alternately lengthwise of said roll, resilient means acting on the opposite ends of said fingers for urging the upper ends thereof toward said roll, and individually adjust-able abutments for determining the limit of motion of the upper ends of said fingers toward said roll. 5. In a machine of the class described, a

bufiing roll and a pair of sets of fluted feed rollers, each set comprising complemental roll-ers each of which is tapered between its center and ends for presenting and feeding work relative to said buffing roll.

6. In a machine of the class described, a pair of spaced sets of feed rollers, the rollers of each set being complementally tapered, and a bufiing roll of uniform diameter positioned between said sets of rollers.

7. In a machine of the class described, a pair of spaced rollers each having portions of greater and portions of lesser diameter, means for pressing work of variable thickness against said rollers, the thicker portions thereof engaging the smaller diameter portions of said rollers, whereby one face of the work may assume substantially a plane,

and a bulfing roll between said spaced rollers and acting on said face.

In testimony whereof I have affixed my signature.

CHARLES W. BAILEY. 

